Merge pull request #1 from jimmyMaci/patch-1

Create DatabaseMetadataExtensions.java

src/main/java/de/alpharogroup/jdbc/DatabaseMetadataExtensions.java

@@ -0,0 +1,29 @@
+package de.alpharogroup.jdbc;
+
+import lombok.experimental.UtilityClass;
+import org.springframework.jdbc.support.DatabaseMetaDataCallback;
+import org.springframework.jdbc.support.JdbcUtils;
+import org.springframework.jdbc.support.MetaDataAccessException;
+
+import javax.sql.DataSource;
+import java.sql.ResultSet;
+import java.util.ArrayList;
+import java.util.List;
+
+@UtilityClass
+public class DatabaseMetadataExtensions {
+
+    private final static DatabaseMetaDataCallback getTableNamesDatabaseMetaDataCallback = dbmd -> {
+        ResultSet rs = dbmd.getTables(dbmd.getUserName(), null, null, new String[]{"TABLE"});
+        List<String> tables = new ArrayList<>();
+        while (rs.next()) {
+            tables.add(rs.getString(3));
+        }
+        return tables;
+    };
+
+    public static Object getTableNames(DataSource dataSource) throws MetaDataAccessException {
+        return JdbcUtils.extractDatabaseMetaData(dataSource, getTableNamesDatabaseMetaDataCallback);
+    }
+
+}